Knob for electric wiring.



13'. B. BOWER. KNOB FOR ELECTRIC WIRIKG.

AIPLIOATION FILED JULY 27, 1910.

[995,333, Patented June 20, 1911 5] me wto'c 33, Q a fledBBowe WWmm nrrn eras FRED B. BOWER, OF PENN YAN, NEVV YOEK, ASSIGNOR OF ONE-HALF TO EDIA R. RAMSEY, 'OF PENN YAN, NEW YORK.

KNOB FOR ELECTRIC WIRING.

senses.

To all whom it may concern:

Be it known that I, FRED B. Bowen, a chi-- zen of the United States oil America, and residing at Penn Yan. in the county of Yates and State of New York, have invented cer tain new and useful Improvements in Knobs for Electric Wirino, of wl'iieh the following is a specification, such as will enable those skilled in the art to which it. ippertains to make and use the same.

This invention relates and the object thereof is for holding wires of this or in pairs.

A. further object is to term the said knob of two elements adapted to interlock and to electric wiring, to provide a knob class, either singly whereby adjustn'ient is possible for dili crent sizes of wires.

a on the line 4 4 of Fig. 1', Fig. 5 is a'seetion A further object is to make the said elements exactly alike whereby they may be interchangeable and also whereby the as-sembled knob may be placed in position with either end outwardly.

A further object is to secure such knobs in position by means of but one screw and which also serves as the adjustingmeans therefor.

A further object is to provide a separating); Wall on either side 01 the said screw in the positions of the wires held in the said knob;

and a still further object is to provide such devices which are simple in construction and use, which are well adapted to the purposes for which they are intended. which are very inexpensive, and which fully comply with the regulations governing the use thereof.

My invention is fully set forth in the following specification, of which the accompanying drawings form a part, in which the separate parts, are designated by the same reference characters in each of the views, and in which Figure I is a side view of my invention in use; Fig. 2 is a similar view at right angles r to Fig. 1; Fig. 3 is a section taken on the l1ne3-3 of F 1g. 1; Fig. 4 1s a sect-ion taken taken on theline 5-5 of Fig. 1; Fig. dis a section taken on the line 6- 6 of Fig. 3 Fig. 7 is an inner plan view of one of the elements which I employ; Fig. 8 is a section taken on the line 88' of Fig. 5; and Fig. 9 is side view of the elementshown in Fig. 7. In the drawings forming a part of this application I have shown a knob comprising Specification of Letters Patent Patented June 20, 191.1.

Application filed July 27, 1919.

Serial No. 574,046.

t two interlocking elements 14 and Z) exactly alike and adapted to be secured in position by means of a screw in the usual manner, .raid screw not being shown as it is of the usual or any desired form.

The element a con'ipriscs a base. a providcd, with a hole a tberethrough and having two directly opposite channels a and of oneither side oi the lower face thereof, and

above which are two integral vertical posts a? and a each being, in cross section, a sector of a circle the are of which is slightly less than 90 degrees said posts being preferably grooved at their outer ends as shown tor rea sons hereinafter clearly set. forth. By reterenee to Fig. '7 it; will. be seen that the center of the ares forming the said sectors is cut; away in the projection of the hole a and, by reference to both Figs. 7 and 9, it. will be seen that the said sectors extend but a shortdistance beyond the base, beyond which they are cut away outwardly from the centers and forming segments with the ends re -moved at right angles to each other, thus forming shoulders a and a on the said pists, the distance between the said segments being slightly greater than the dista nee between the inner sides of the channels a and (1. I f' by reference to Figs. 6 to 9, inclusive. it will be seen that a w ll a?" rovi 'led;between the channels (i and m and the hole a, the object of whichis to prevent any contact of the wires in the channels with the screw in the'hole, these walls, hmvever, terminat- ,ing at a point approximately even with the corresponding side of the wires carried in the channels, and beyond which the sectors begin. The element 7), as previously stated, is exactly like that a just. described, compris ing the base 5 with a hole 6 therein, and having-the channels 5 and b and posts ti and I)? having the shoulders 7) and 7), as well as the wallsfb, and il -Will be observedinboth ot these elements that the sectors of each are diametrically opposite and the ehannels'ot' each element are parallel to the axial plane of the said sectors of the corresponding element, and it will also be noted that the holes a and b are each outwardly flared upon the outer aces of the bases 0 and a forming recesses tor the head of the screw to be enrployed. It will be clearly seen that the axial planes of the sectors of the two elements are at right angles to each other when the said elements are united, the sectors a and oi separating those'b and b and thus preventing rotary movement of the elements one upon the other but permitting longitudinal move ment and the segments of the element aembrace the walls b whereas those of the element I) embrace t e walls a? and the grooves in the outer ends of the posts a and a register with the channels 6' and b while-those on the posts Z and Z) register with the channelsa and a;

ln placing the knobs in position, after assembling as last described, the wires are arranged in the channels farthest removed from the surface upon which the knobs are to be mounted, this being a legal requirement in order to insure a safe distance of the wires from the said surface, after which the screw is passed through the holes of the elements and driven lnt'o the said surface,

the longitudinal movement possible of the elements over each other permitting great latitude in the size of the wire employed and still insuring a firm engagement between said elements, and it will be observed that either of the said elements may be coni may, suggest themselves in order to produce the desired result under varying conditions, and these changes or modilitattions still be within the spirit of my invention.

ll a ving. fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is:'

1. A deviceo't' the class described, comprising two similar elements adapted to interlock torho ld wires therebet ween, each of said elements-consisting of a base and two diametrically arranged posts, the posts of each element slidably mounted between and separating the posts of the other element.

2. A device of the class described, comprising two similar interlocking elements having a wire channel therebetween, said elements comprising each a base and two diametrically opposed posts and each of said posts forming 1n cross section a sector,

the are of which is approximately 90 de- 3 grees of a circle. 1 V A device of the class'described, comone with the other and with a wall on each side of said hole, and having also two posts.

each in diametrical engagement, [each of said post-s having a portion thereof, embracwhich is approximately 90 degrees: of a circle. J j

at. In a device of the class'described, an element comprising a base two posts forming in cross section, each,'a sector the arc of which is approximately 90 degrees, and a screw holebcing provided therein, saideler ment having also two wire channels on prising two similar interlocking elements provided each wlth a screw hole 111 register either side of and parallel to the axial plane i of said posts, said post being diametrically arranged,

5; A device of the class described com-t.

prising" two similar interlocking elements having wire channels therebetween said ele:

ment's comprising each a base and two dia metrically opposed posts and each of said posts forming in cross section a sector, the are of which isvapproximately degrees of a circle, said elements being slid-ably adjusted upon each other to vary the diameters of said wire channels. j

(3. A device of the class described',-comprising two. similar interlocking elements having wire thereof, said elementscomprising eachla and each of saidposts forming in crosssection. a sector, the are of which is approximately 90 degrees of a circle, said pairs of wire channels being arranged at right angles to each other.

channels therebetween, on either side thereof, and ad acent each end a base and two diametrically opposed posts l'n test'in'iony that I claim the foregoing as my invention T have signed my name in preseneeof the subscribing witnesses this FRED B. BOWER. I

\Vitnesses: p t. i

ll. K. Aims'rnono, )m v an S1 IEIPARD. 

